View clinical trials related to Arteriovenous Malformations.
Filter by:- Review the outcomes of the Endovascular management of pediatric intracranial arteriovenous shunts. - Give an effective treatment for pediatric intracranial arteriovenous shunts and can detect the best method could be used and assess safety and efficacy of different endovascular techniques in treatment of different AV shunts. - Improve the outcome of these patients and decease rate of recurrence and complications.
Computed tomography (CT) is the modality of choice to characterize pulmonary arteriovenous malformations (PAVMs) in patients with hereditary haemorrhagic telangiectasia (HHT). The objective of this study was to determine if CT findings were associated with frequency of brain abscess and ischaemic stroke. This retrospective study included patients with HHT-related PAVMs. CT results, PAVM presentation (unique, multiple, disseminated or diffuse), the number of PAVMs and the largest feeding artery size, were correlated to prevalence of ischaemic stroke and brain abscess.
Uterine arteriovenous malformations (UAVM) are short circuits between systemic arterial and venous networks within the uterus. They are congenital or acquired (in the course of an endo-uterine gesture such as curettage or interventions such as caesareans or myomectomies). They can be manifested by severe metrorrhagia that can go as far as to put the patient's vital prognosis at risk. There are no recommendations for the management of UAVM since this pathology is rare and therefore series are performed with few cases. If some of these UAVM disappear spontaneously after a therapeutic abstention, when the clinical context allows it, in case of symptomatic UAVM, a selective embolization with arteriography is often carried out to postpone the hysterectomy of hemostasis. There are also more marginal management options such as Gonadotropin-Releasing Hormone agonists, methotrexate or curettage that are decided on a case by case basis depending on the symptoms and protocols of each medical team. Regarding subsequent fertility and pregnancy outcomes after conservative treatment, the number of studies is even lower.
Rapid ventricular pacing (RVP) is a technique to obtain flow arrest for short periods of time during dissection or rupture of the aneurysm. RVP results in an adequate fall of blood pressure which presents as an on-off phenomenon. It is not clear whether repetitive periods of pacing are harmless for the patient. Silent cardiac and cerebral infarcts may be undetected. The investigator will study the safety of RVP, particularly for the heart and the brain, retrograde by studying troponin levels and magnetic resonance imaging or computed tomography.
This study compares the accuracy of fusion imaging (Fusion Roadmap) versus real-time X-ray imaging (Roadmap) during catheterization of supra-aortic trunks of in patients with aneurysms or arteriovenous malformations.
To evaluate the clinical benefits and risks of hybrid operating techniques in management of cerebral arteriovenous malformations.
Current HHT guidelines recommend CT scan to detect new or recurrent PAVMs after embolotherapy. Recent studies using transthoracic contrast echocardiography (TTCE) shunt grade for PAVM screening suggest that graded TTCE can accurately predict the size of PAVMs on chest CT and their amenability to embolization. This study's purpose is to evaluate whether TTCE shunt grade can also accurately predict PAVM size and amenability to treatment in patients who are post-embolization.
A non-interventional multicentric study for patients with a cerebral AVM for which endovascular treatment is indicated.
Stereotactic radiosurgery is a well established treatment option for arteriovenous malformations (AVMs). The potential complications related to radiosurgery are well documented and are predominately related to radiation effects to the surrounding brain parenchyma. These risks increase with larger lesions, requiring a concommitant reduction in the amount of radiation that can be delivered. This reduction in radiation dose decreases the efficacy of treatment. The broad, long-term objectives of this proposal are 1) to determine the role of fractionated stereotactic radiosurgery in the treatment of large (>10cc) AVMs; 2) to evaluate the complication rates related to fractionating these doses compared to conventional stereotactic treatment 3) to evaluate the success rate of treating large AVMs with this protocol.
Pulmonary arteriovenous malformations (PAVMs) are a rare vascular condition affecting the lungs. PAVMs lead to low blood oxygen levels, yet are very well tolerated by patients. This study will examine the exercise capacity of PAVM patients using formal cardiopulmonary exercise tests performed on a stationary bicycle.